[IGSREPORT-5444] Wk 0977 G-SINEX Comparisons
AC
AC
Mon Oct 26 05:47:38 PST 1998
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IGS Electronic Report Mon Oct 26 5:47:38 PST 1998 Message Number 5444
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Author: AC Coordinator / NRCan GSDivision
Subject: Wk 0977 G-SINEX Comparisons
Comparison of GNAAC Combined SINEX Solutions - Week 0977
(SEP 27, 1998 - OCT 3, 1998)
Contacts: J. Kouba (kouba at geod.emr.ca)
D. Hutchison (hutch at geod.emr.ca)
R. Ferland (ferland at geod.emr.ca)
COMPARISON ALGORITHM:
1. MIT and NCL GNAAC combined SINEX solutions for the week in question
were deconstrained. The JPL SINEX file is already unconstrained.
2. Any station present in only one GNAAC combined SINEX files was de-
leted from all three combined solutions. Every solution was then sub-
jected to a 7-parameter transformation into a common reference system
(the positions of the ITRF96 RS47 station set expected at mid-week).
Station coordinates with ITRF96 transformation residuals in excess of
55 mm. from ITRF96 after transformation were excluded from subsequent
analysis of this combined solution, and the 7-parameter transformation
was reapplied.
3. Outliers are determined at the 99.0% confidence level for each coordin-
ate. If a station has an outlier in either latitude, longitude, or
height, it is ignored in all subsequent computations.
FILES COMPARED:
jpl0977g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
mit0977g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ncl0977g.snx at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
GNAACs: JPL MIT NCL
STATIONS WITH INCONSISTENT ANTENNA ECCENTRICITY INFORMATION:
(FILE: / STATION / L1 (UNE) / L2 (UNE) / ECCENTRICITY (UNE))
(UNE = Up North East (metres))
jpl0977g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
mit0977g.snx: BARB .110 .000 .000 .128 .000 .000 .000 .000 .000
ncl0977g.snx: BARB .000 .000 .000 .000 .000 .000 .000 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0977g.snx: INEG .000 .000 .000 .000 .000 .000 .130 .000 .000
mit0977g.snx: INEG .081 .000 -.001 .078 -.002 .004 .066 .000 .000
- Unresolvable. No log file. Antenna parameters not listed in igs.snx.
jpl0977g.snx: HFLK .078 .000 .000 .096 .000 .000 .000 .000 .000
ncl0977g.snx: HOFN .000 .000 .000 .000 .000 .000 .055 .000 .000
ncl0977g.snx: HRAO .110 .000 .000 .128 .000 .000 .000 .000 .000
jpl0977g.snx: MONP .000 .000 .000 .000 .000 .000 .119 .000 .000
jpl0977g.snx: SUTH .000 .000 .000 .000 .000 .000 .119 .000 .000
mit0977g.snx: TROM .078 .000 .000 .096 .000 .000 2.475 .000 .000
FILE ncl0977g.snx MISSING THE SITE/GPS_PHASE_CENTER BLOCK.
DEFAULTING TO KNOWN L1/L2 OFFSETS AND ECCENTRICITIES.
ANTENNA PHASE CENTRE CONFLICTS IN FILE jpl0977g.snx
(MODEL / SER. NO. / L1 (UNE) / L2 (UNE))
(UNE = Up North East (metres))
DORNE MARGOLIN B ----- .078 .000 .000 .096 .000 .000
DORNE MARGOLIN B ----- .000 .000 .000 .000 .000 .000
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: NYAL
ANTENNA PHASE CENTRE CONFLICTS IN FILE mit0977g.snx
GALA Multiple Sites
IISC Multiple Sites
SITES AFFECTED BY ABOVE CONFLICTS, NON-FIDUCIAL SITES SUBSEQUENTLY EXCLUDED:
Stations: GALA IISC
COORDINATE DIFFERENCE THRESHOLD FOR STATION REJECTION: 55 mm.
(REFERS TO COORDINATE DIFFERENCE FROM ITRF96 AFTER 7-PARAMETER TRANSFORMATION)
THE FOLLOWING STATIONS WERE DELETED FROM MIT
DUE TO DIFFERENCES IN EXCESS OF 55 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt HOB2 -98.4 mm.
THE FOLLOWING STATIONS WERE DELETED FROM JPL
DUE TO DIFFERENCES IN EXCESS OF 55 mm. WITH ITRF96
AFTER 7-PARAMETER TRANSFORMATION TO ITRF96
Hgt HOB2 -146.1 mm.
CONFIDENCE LEVEL FOR OUTLIER DETECTION : 99%
OUTLIERS REJECTED (COORD/STATION/GNAACs):
Lat TRO1 JPL-MIT Lat TOW2 JPL-MIT Lat ALIC JPL-MIT
Lat MAC1 JPL-MIT Lat MALI JPL-MIT Lat CEDU JPL-MIT
Lat HARK JPL-MIT Lat TIDB JPL-MIT Lat COCO JPL-MIT
Lat TID2 JPL-MIT Lat TID2 JPL-NCL Lon TRO1 JPL-MIT
Lon BAKO JPL-MIT Lon MALI JPL-NCL Lon AREQ JPL-NCL
Lon LPGS JPL-NCL Lon WHIT MIT-NCL Lon NTUS MIT-NCL
Lon YAR1 MIT-NCL Lon MAS1 MIT-NCL Hgt THU1 JPL-MIT
Hgt COCO JPL-MIT Hgt MDVO JPL-NCL Hgt YAKA JPL-NCL
Hgt COCO JPL-NCL Hgt MDVO MIT-NCL Hgt WUHN MIT-NCL
122 GLOBAL STATIONS:
ALBH ALGO AMCT ANKR AOML ASC1 AUCK BAHR BISH BOGO
BOGT BOR1 BRMU BRUS CAGL CAS1 CHAT CHUR CRO1 DARW
DAV1 DGAR DRAO DUBO EISL ELAT FAIR FLIN FORT GILB
GLSV GODE GOL2 GOLD GOPE GOUG GRAS GRAZ GUAM HERS
HOLB IAVH IRKT JAB1 JOZE JPLM KABR KARR KATZ KELY
KERG KIRU KIT3 KOKB KOSG KOUR KSTU KWJ1 LAMA LHAS
MAD2 MADR MATE MAW1 MCM4 MDO1 MEDI METS MKEA NANO
NICO NLIB NOTO NOUM NRC1 NSSP NYA1 NYAL OBER OHIG
ONSA PENC PERT PETR PIE1 POL2 POTS PRDS QUIN RAMO
RIOG SANT SCH2 SELE SHAO SJDV SOL1 STJO SUWN TAEJ
TELA TOUL TSKB UCLU UPAD URUM USNA USNO USUD VESL
VILL WES2 WILL WSLR WSRT WTZR XIAN YAKZ YELL ZECK
ZIMM ZWEN
43 FIDUCIAL STATIONS:
ALGO AREQ BRMU DAV1 DRAO FAIR FORT GODE GOL2 GRAZ
GUAM IRKT KERG KIT3 KOKB KOSG KOUR KWJ1 LHAS MAC1
MAD2 MALI MAS1 MATE MDO1 NLIB NYAL OHIG ONSA PERT
PIE1 POTS SANT SHAO THU1 TID2 TSKB VILL WES2 WTZR
YAR1 YELL ZWEN
AVERAGE COORDINATE RMS USING ITRF96:
122 GLOBAL STATIONS 43 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
(mm) (mm) (mm) (mm) (mm) (mm)
------- ------- ------- ---------- ---------- ----------
Lat 0.9 0.9 0.7 5.2 5.0 5.0
Lon 0.7 0.9 0.9 6.1 6.1 6.0
Hgt 2.1 2.8 2.7 10.0 11.7 11.5
3D 2.4 3.1 2.9 12.8 14.1 13.9
VARIANCE FACTORS WITH ITRF96 (CHI-SQUARE / (DEGREES OF FREEDOM)):
137 GLOBAL STATIONS 43 FIDUCIAL STATIONS
JPL-MIT JPL-NCL MIT-NCL JPL-ITRF96 MIT-ITRF96 NCL-ITRF96
------- ------- ------- ---------- ---------- ----------
0.115 0.127 0.163 2.866 3.805 2.508
OFFSETS AND SCALE FACTOR WRT ITRF96 (FIDUCIAL STATIONS):
(TRANSFORMATION FROM ITRF96 TO GNAAC SINEX FILES)
Tx (mm) STD(mm) Ty (mm) STD(mm) Tz (mm) STD(mm) Scale (ppb) STD(ppb)
------- ------- ------- ------- ------- ------- ----------- --------
JPL -2.7 2.8 -1.7 2.9 -8.0 3.8 -0.1 0.2
MIT -2.2 1.8 -0.8 1.9 -9.5 2.5 -0.4 0.1
NCL -1.5 3.2 -0.8 3.3 -6.6 4.5 -0.1 0.2
REMARKS:
STATION NAME/POINT CODES CHANGED IN ncl0977g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
YAKZ A YAKA A 12353M001
1 Change in all.
STATION NAME/POINT CODES CHANGED IN mit0977g.snx
ENFORCED FROM TEMPLATE FILE igs.snx .
Old New IERS
Code/Pt Code/Pt DOMES NO
------- ------- --------
TROM B TRO1 A 10302M006
NYAL B NYA1 A 10317M003
2 Changes in all.
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM jpl0977g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM mit0977g.snx :
Stations: BRAZ
THE FOLLOWING ITRF96 FIDUCIAL STATIONS ARE MISSING FROM ncl0977g.snx :
Stations: BRAZ HART HOB2 MAD2
SITE/ID BLOCK IERS DOMES NOS. VS STATION CODE/PT FIELDS IN COMPARED GNAAC FILES:
(ENTRIES APPEAR ONLY WHERE GNAACS DIFFER.)
IERS DOMES NO JPL MIT NCL
============= ====== ====== ======
42202M005 AREQ A AREQ A AREQ A
ARE1 A
42005M001 GALA A GALA A GALA A
GAL1 A GALA B
40405S031 GOL2 A GOLD A GOL2 A
GOLD A GOL2 A GOLD A
GOL1 A
30302M007 HARK A HARK A HARK A
HART A HART B
HAR1 A
22306M002 IISC A IISC A IISC A
IIS1 A IISC B
13407S012 MAD2 A MAD2 A
MADR A MADR A
31303M002 MAS1 A MAS1 A
MASP A
31303M001 MAS1 A
12309M002 MDVO A MDVO A
MDV1 A
12309M001 MDVO A
10317M003 NYA1 A NYAL B
50103M108 TID2 A TIDB A TID2 A
TIDB A TID2 A TIDB A
10302M006 TRO1 A TROM B
12353M001 YAKA A YAKZ A YAKZ A
YAKZ A YAKA A
50107M004 YAR1 A YAR1 A YAR1 A
YAR2 A
MISSING IERS DOMES NOS AT JPL:
-----------------------------
ALIC A BAKO A BISH A DARW A ELAT A GILB A INEG A KABR A KARR A KATZ A
MAW1 A RAMO A RIOG A TELA A TOW2 A URUM A
MISSING IERS DOMES NOS AT MIT:
-----------------------------
RIOG A INEG A BAKO A URUM A BISH A KATZ A GILB A KABR A ELAT A TELA A
SITE/ID BLOCK IERS DOMES NOS. VS STATION CODE/PT FIELDS IN ABBREVIATED .ssc FILES:
cod09777.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
emr09777.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
esa09777.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
gfz09777.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
jpl09777.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
ngs09777.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
sio09777.ssc at cddis.gsfc.nasa.gov or cddisa.gsfc.nasa.gov
(ENTRIES APPEAR ONLY WHERE ACS DIFFER.)
IERS DOMES NO COD NRCan ESA GFZ JPL NGS SIO
============= ====== ====== ====== ====== ====== ====== ======
30302M007 HART A HART B HART B HARK A HARK A HART B HARK A
31303M002 MASP A MASP B MASP B MAS1 A MAS1 A MASP B MAS1 A
12309M002 MDVO A MDVO B MDVO A MDVO A
12353M001 YAKZ A YAKA A YAKZ A
YAKZ A
40405S031 GOLD A GOLD A GOLD A GOL2 A GOL2 A GOLD B GOL2 A
50103M108 TIDB A TIDB A TIDB A TID2 A TID2 A TIDB A TID2 A
50107M004 YAR1 A YAR1 A YAR1 A YAR2 A YAR1 A YAR1 A YAR1 A
42202M005 AREQ A AREQ B AREQ B AREQ A AREQ A AREQ B AREQ A
22306M002 IISC A IISC B IISC A IISC A IISC B IISC A
42005M001 GALA A GALA A GALA A GALA B GALA A
10302M006 TROM A TRO1 A
13407S012 MADR A MAD2 A MADR A MAD2 A
22601M001 NTUS A NTUS A NTUS A NTUS A
22601M002 NTUS A
MISSING IERS DOMES NOS AT GFZ:
-----------------------------
BISH A URUM A RIOG A
MISSING IERS DOMES NOS AT SIO:
-----------------------------
INEG A BAKO A KATZ A GILB A KABR A ELAT A TELA A
--
David Hutchison
Geodetic Survey of Canada
Ottawa, Ontario, Canada
Internet: hutch at geod.emr.ca
[Mailed From: David Hutchison <hutch at geod.nrcan.gc.ca>]
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